The Magnificent 7 and why market concentration matters

The S&P 500 is one of the most widely used measures of the US stock market. It is meant to represent a broad mix of leading American companies. However, the Magnificent 7 now make up more than a quarter of this entire index. As a result, anyone who invests in a fund that tracks the S&P 500 may have a much larger exposure to these companies than they realise.

This can increase risk. These companies have been high performers, but they are still vulnerable to challenges such as increased regulation, slower growth, or falls in share prices after periods of rapid gains. If any of these companies decline in value, it could have a large effect on an investor’s portfolio.

There are many reasons why these companies have become so dominant. They often have:

• Strong financial foundations and high levels of cash
• Global operations and large customer bases
• Strong competitive positions in fast-growing technologies, especially AI

Nvidia, for example, leads the market in computer chips used to power artificial intelligence. Meta continues to invest heavily in new technologies that could shape the future. Their strengths fit well with our focus on high quality businesses that have the potential to deliver reliable performance over time.

There are also risks that investors need to be aware of, especially when exposure is unintentional or not fully understood.

Valuation risk
Many of the Magnificent 7 companies have high share prices compared with their earnings. This reflects strong expectations for future growth. If that growth slows or unexpected events occur, their share prices could fall quickly. A portfolio that relies too heavily on these companies may find it difficult to recover.

Behavioural risk
It is natural for investors to be drawn to areas of the market that have performed strongly. However, following momentum may lead to buying at high prices and selling during downturns. This type of behaviour often results in disappointing long-term returns.

Overlap across multiple investments
Many investors hold more than one fund. Without realising it, they may own the same big technology companies several times through different funds. For example, a US fund, a global fund, and a technology fund might all include Apple, Microsoft, or Nvidia. This creates hidden concentration and reduces the benefits of diversification. In difficult market periods, this could increase losses.

These risks are real and may affect long-term outcomes. A portfolio might look well balanced at first glance but could still rely too heavily on a small group of companies.

This is where active management and clear advice play a vital role. Our investment process aims to identify any hidden risks or unintended concentrations. Our goal is to create portfolios that are aligned with your long-term goals and your comfort level with risk.

Working with Schroders gives us access to in-depth research that helps us assess companies using measures such as:

• The stability of their earnings
• How responsibly they manage debt
• Their competitive strengths
• The quality of their leadership and governance

Schroders looks at each of the Magnificent 7 individually, rather than treating them as one single trend. Their view on each company can change as new information comes to light. For example, how well the business is growing, how competitive it is, or whether it faces new challenges. This means we can adjust how much we invest in each company over time. Being able to increase or reduce our investment when needed is an important advantage of active management, especially when these companies have such a big impact on global stock markets.

In practice, this means we may continue to hold, or even hold slightly more of, certain companies within the group when the long‑term picture looks positive. Equally, we can reduce exposure to others if we believe the risks are rising. This flexibility is designed to help protect your portfolio while still giving you access to opportunities in areas such as technology and artificial intelligence.

This disciplined approach helps reduce downside risk while providing access to long-term opportunities in areas like technology and artificial intelligence, where growth can be significant when approached intentionally and with careful research.

Today’s market environment can feel dominated by a few well-known names and fast moving trends. By focusing on quality companies and building well diversified portfolios, we aim to provide clarity and resilience. Our role is not just to choose investments, but to make sure your overall portfolio reflects your goals, your risk appetite, and your long-term financial journey.

Every investment should have a clear purpose. Our approach is designed to make sure that your portfolio is balanced, intentional, and aligned with what you want to achieve.

It should be remembered, that all investments carry risk. Their value can go down as well as up, and you may not get back the amount you invest. Also, some services we provide involve fees and charges. An adviser will explain what applies to you and answer any questions before you proceed.

This article is for information purposes only. It is not intended as investment advice.

Any views expressed are our in-house views at the time of publishing. This content may not be used, copied, quoted, circulated or otherwise disclosed (in whole or in part) without our prior written consent.